{"id":6468,"date":"2024-08-07T17:01:03","date_gmt":"2024-08-07T09:01:03","guid":{"rendered":""},"modified":"2024-08-07T17:01:03","modified_gmt":"2024-08-07T09:01:03","slug":"\u7535\u963bresistance_\u7535\u963b\u5927\u5168","status":"publish","type":"post","link":"https:\/\/mushiming.com\/6468.html","title":{"rendered":"\u7535\u963bresistance_\u7535\u963b\u5927\u5168"},"content":{"rendered":"

\u521d\u89c1\u5b89~\u8fd9\u662f\u8fd1\u65e5\u8fde\u6d4b\u7684\u8003\u8bd5\u9898\u76ee\u6240\u4ee5\u6211\u4e5f\u4e0d\u77e5\u9053\u51fa\u5904QwQ<\/p>\n

\u9898\u76ee\u63cf\u8ff0<\/h4>\n

  \u6bcf\u6b21\u5c0fx\u7269\u7406\u4f5c\u4e1a\u6ca1\u505a\u5b8c\u65f6\uff0c\u603b\u662f\u4f1a\u53bb\u548c\u8001\u5e08\u4ea4\u6d41\u611f\u60c5\uff0c\u4ed6\u4eec\u4e4b\u95f4\u7531\u6b64\u5efa\u7acb\u8d77\u6765\u826f\u597d\u7684\u5e08\u751f\u5173\u7cfb\u3002\u4e8e\u662f\u6709\u4e00\u5929\uff0c\u8001\u5e08\u5e26\u7740\u4e00\u9053\u7269\u7406\u96be\u9898\u6765\u89c1\u5c0fx\u3002<\/p>\n

  \u8fd9\u9053\u9898\u7ed9\u51fa\u4e86\u4e00\u4e2a\u6709n\u4e2a\u7535\u963b\u7684\u7535\u8def\uff0c\u6bcf\u4e2a\u7535\u963b\u4f7f\u7528\u4e00\u4e2a\u5927\u5199\u5b57\u6bcd\u6765\u6309\u5b57\u5178\u5e8f\u4f9d\u6b21\u7f16\u53f7\uff0c\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u7535\u963b\u4e4b\u95f4\u4e32\u8054\u3001\u5e76\u8054\u6216\u8005\u6df7\u8054\u6784\u6210\u4e86\u7535\u8def\uff0c\u7535\u963b\u81ea\u8eab\u5c31\u662f\u6700\u5c0f\u7684\u7535\u8def\u3002<\/p>\n

  \u8001\u5e08\u8bf4\uff1a\u201c\u73b0\u5728\u544a\u8bc9\u4e86\u4f60\u5404\u7535\u8def\u4e4b\u95f4\u7684\u5173\u7cfb\u548c\u6bcf\u4e2a\u7535\u8def\u65ad\u8def\u7684\u6982\u7387\uff0c\u8bf7\u4f60\u6c42\u51fa\u6574\u4e2a\u7535\u8def\u65ad\u8def\u7684\u6982\u7387\u3002\u201d<\/p>\n

  \u6ce8\u610f\uff0c\u6211\u4eec\u53ef\u4ee5\u89c6\u6240\u6709\u7684\u7535\u963b\u7ec4\u6210\u7684\u4e00\u4e2a\u603b\u7535\u8def\u4e24\u7aef\u88ab\u52a0\u4e0a\u4e86\u7535\u538b\uff0c\u5f53\u603b\u7535\u8def\u4e0d\u4ea7\u751f\u7535\u6d41\u65f6\u89c6\u4e3a\u6574\u4e2a\u7535\u8def\u65ad\u8def\uff0c\u82e5\u603b\u7535\u8def\u4e3a\u82e5\u5e72\u7535\u8def\u4e32\u8054\uff0c\u5219\u4efb\u4e00\u5b50\u7535\u8def\u65ad\u8def\u89c6\u4e3a\u603b\u7535\u8def\u65ad\u8def\uff1b\u82e5\u603b\u7535\u8def\u4e3a\u82e5\u5e72\u7535\u8def\u5e76\u8054\uff0c\u5219\u5e76\u8054\u7684\u6240\u6709\u7535\u8def\u65ad\u8def\u89c6\u4e3a\u603b\u7535\u8def\u65ad\u8def\uff1b\u82e5\u603b\u7535\u8def\u4e3a\u6df7\u8054\uff0c\u5219\u4efb\u4e00\u6df7\u8054\u5b50\u7535\u8def\u65ad\u8def\u89c6\u4e3a\u603b\u7535\u8def\u65ad\u8def\u3002<\/p>\n

\u6837\u4f8b\u8f93\u5165<\/h4>\n
5 (A,B)((C)(D),E) 0.2 0.3 0.4 0.5 0.6<\/code><\/pre>\n
\u6837\u4f8b\u8f93\u51fa<\/h4>\n
0.2992<\/code><\/pre>\n
\u9898\u89e3<\/h4>\n
\u8fd9\u4e2a\u9898\u5427\u2026\u2026\u5176\u5b9e\u5f88\u597d\u60f3\u5230\u7684\u5c31\u662f\uff1a\u4e32\u8054\u3010S\u96c6\u5408\u3011\u6302\u6389\u4e00\u4e2a\u5c31\u5168\u6302\u6389\u4e86\uff0c\u4e5f\u5c31\u662f\u53ea\u6709\u5168\u90fd\u4e0d\u6302\u624d\u80fd\u4e0d\u65ad\u8def\uff1b\u5e76\u8054\u3010T\u96c6\u5408\u3011\uff0c\u5168\u90e8\u6302\u6389\u624d\u7b97\u6302\u6389\u3002\u6240\u4ee5\u5404\u81ea\u7684\u65ad\u7535\u6982\u7387\u4e3a\uff1a<\/p>\n
\u4e32\u8054\uff1a\"\u7535\u963bresistance_\u7535\u963b\u5927\u5168\uff0c \u5e76\u8054\uff1a\"\u7535\u963bresistance_\u7535\u963b\u5927\u5168\u3002<\/p>\n
\u6240\u4ee5\u8fd9\u4e2a\u9898\u771f\u6b63\u7684\u96be\u70b9\u5728\u4e8e\u2014\u2014\u600e\u4e48\u5904\u7406\u9898\u76ee\u7ed9\u51fa\u7684\u90a3\u4e2a\u62ec\u53f7\u5b57\u7b26\u4e32\u3002<\/p>\n
\u53ef\u4ee5\u770b\u51fa\u2014\u2014\u5e76\u8054\u7684\u4f18\u5148\u7ea7\u5927\u4e8e\u4e32\u8054\uff0c\u56e0\u4e3a\u5e76\u8054\u6709\u7c7b\u4f3c\u4e8e\u603b\u548c\u7684\u610f\u601d\u3002\u561b\uff0c\u770b\u8fd9\u4e2a\u5b57\u7b26\u4e32\u7684\u8bdd\uff0c\u6211\u4eec\u80af\u5b9a\u662f\u4ece\u62ec\u53f7\u5165\u624b\u3002\u53ef\u4ee5\u60f3\u5230\u7c7b\u4f3c\u4e8edfs\u5206\u89e3\u5404\u4e2a\u533a\u95f4\u7684\u505a\u6cd5\u2026\u2026\u3010\u4f3c\u4e4e\u4e0d\u53ef\u884c\uff1f\u53cd\u6b63\u6211\u6ca1\u5199\u51fa\u6765QwQ\u3011<\/p>\n
\u6b63\u89e3\u505a\u6cd5\u662f\uff1a\u5c31\u50cf\u5904\u7406\u56db\u5219\u8fd0\u7b97\u7684\u8868\u8fbe\u5f0f\u4e00\u6837\uff0c\u5982\u679c\u662f\u5e76\u8054\u7684\u8bdd\uff0c\u6211\u4eec\u9700\u8981\u6ce8\u610f\u5728\u62ec\u53f7\u4e4b\u95f4\u52a0\u4e00\u4e2a\u7b26\u53f7\u4ee5\u8fa8\u8ba4\uff0c\u7c7b\u4f3c\u4e8e'*'\u3002<\/p>\n
\u63a5\u4e0b\u6765\u770b\u5904\u7406\u7684\u601d\u8def\uff1a<\/p>\n
\u6211\u4eec\u6d89\u53ca\u5230\u7684\u7b26\u53f7\u6709\uff1a\u524d\u540e\u62ec\u53f7\uff0c\u4e58\u53f7\u548c\u9017\u53f7\uff0c\u5982\u679c\u9047\u5230\u4e86\u540e\u62ec\u53f7\u5c31\u8981\u53bb\u5339\u914d\u524d\u62ec\u53f7\u5e76\u4e14\u8ba9\u62ec\u53f7\u5185\u7684\u5185\u5bb9\u7b97\u51fa\u7b54\u6848\u3002\u7136\u800c\u5982\u679c\u9047\u5230\u4e86\u62ec\u53f7\u624d\u8ba1\u7b97\u7684\u8bdd\u5f88\u9ebb\u70e6\uff0c\u6240\u4ee5\u6211\u4eec\u8fb9\u626b\u8fb9\u7b97\u3002\u9047\u5230\u4e86\u5b57\u6bcd\uff0c\u5c31\u628a\u8fd9\u4e2a\u7535\u963b\u7684\u6982\u7387\u653e\u8fdb\u6570\u7ec4s2,\uff1b\u5982\u679c\u662f\u4e0a\u8ff0\u7b26\u53f7\uff0c\u5c31\u653e\u8fdb\u6570\u7ec4s1\uff0c\u9047\u5230\u4e86\u540e\u62ec\u53f7\u6216\u8005\u53e6\u5916\u4e24\u79cd\u64cd\u4f5c\u7b26\u7684\u65f6\u5019\u5c31\u628as2\u7684\u503c\u53d6\u51fa\u6765\u7528\uff0c\u987a\u4fbf\u8986\u76d6\u4e0b\uff0c\u7b26\u53f7\u4e5f\u8ddf\u7740\u5728s1\u91cc\u9762\u5f80\u524d\u9762\u5220\u3002<\/p>\n
\u5f53\u7136\u5982\u679c\u662f\u524d\u62ec\u53f7\u7684\u8bdd\u76f4\u63a5\u6254\u8fdbs1\u91cc\u9762\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
\u4e3a\u4e86\u6dfb\u52a0'*'\u7684\u64cd\u4f5c\u65b9\u4fbf\uff0c\u6211\u4eec\u628a\u8bfb\u5165\u7684s\u6570\u7ec4\u5904\u7406\u5230\u4e86ss\u6570\u7ec4\u91cc\u3002<\/p>\n
\u4ee3\u7801\u6709\u53c2\u8003ls\u5927\u4f6c\u3011<\/p>\n
#include<algorithm> #include<iostream> #include<cstring> #include<cstdio> #include<cmath> #include<queue> #define maxn 100 using namespace std; typedef double ll; int read() { int x = 0, f = 1, ch = getchar(); while(!isdigit(ch)) {if(ch == '-') f = -1; ch = getchar();} while(isdigit(ch)) x = (x << 1) + (x << 3) + ch - '0', ch = getchar(); return x * f; } int n, t1 = 0, t2 = 0, m = 0; ll p[maxn]; char s[maxn], ss[maxn], s1[maxn]; ll s2[maxn]; ll cal(ll a, ll b, char c) { if(c == '*') return a * b; else return a + b - a * b;\/\/\u56e0\u4e3a\u6d89\u53ca\u5230\u7684\u90fd\u662f \u4e24\u4e24\u64cd\u4f5c\uff0c\u6240\u4ee5\u7b80\u5316\u540e\uff1a1-(1-x)*(1-y)=1-(1+x*y-x-y) } void work() { ll x; for(int i = 1; i <= m; i++) { if(ss[i] >= 'A' && ss[i] <= 'Z') s2[++t2] = p[ss[i] - 'A'];\/\/\u628a\u6570\u503c\u653e\u8fdb\u53bb else if(ss[i] == ')') {while(s1[t1] != '(') x = cal(s2[t2], s2[t2 - 1], s1[t1--]), s2[--t2] = x; t1--;}\/\/\u540e\u62ec\u53f7\u5c31\u53bb\u627e\u524d\u62ec\u53f7 else if(ss[i] == '@') {while(t1) x = cal(s2[t2], s2[t2 - 1], s1[t1--]), s2[--t2] = x;}\/\/\u5230\u5e95\u4e86\uff0c\u5f00\u59cb\u6e05\u7a7a\u4e4b\u524d\u5b58\u4e0b\u6765\u7684\u64cd\u4f5c\u7b26 else if(ss[i] == ',') {while(s1[t1] == '*') x = cal(s2[t2], s2[t2 - 1], s1[t1--]), s2[--t2] = x; s1[++t1] = ss[i];}\/\/ else if(ss[i] == '*') {while(s1[t1] == '*') x = cal(s2[t2], s2[t2 - 1], s1[t1--]), s2[--t2] = x; s1[++t1] = ss[i];}\/\/\u8fd9\u4e24\u884c\u64cd\u4f5c\u4e00\u6837\u7684 else s1[++t1] = ss[i]; \/\/\u518d\u5982\u679c\u5c31\u662f\u524d\u62ec\u53f7\u4e86 \/\/\u6ce8\u610f\uff0c\u4e0a\u65b9\u90fd\u662f\u5148\u8ba1\u7b97\u51facal\uff08\uff09\u518d\u8d4b\u503c\u7ed9\u7684s2[--t2]\uff0c\u8fd9\u91cct2\u7684\u503c\u4e0d\u80fd\u63d0\u524d\u51cf\u4e00\u3002 } } signed main() { n = read(); scanf(\"%s\", s + 1); for(int i = 0; i < n; i++) scanf(\"%lf\", &p[i]); for(int i = 1; i <= strlen(s + 1); i++) { if(s[i] == '(' && s[i - 1] == ')') ss[++m] = '*'; ss[++m] = s[i];\/\/\u5904\u7406s\u6570\u7ec4\u5230ss } ss[++m] = '@'; \/\/s\u968f\u4fbf\u52a0\u4e2a\u7b26\u53f7\u8868\u793a\u662f\u6700\u540e\u4e00\u4e2a\u4e86 work(); printf(\"%.4lf\\n\", s2[1]); return 0; } <\/code><\/pre>\n
\u8fce\u8bc4QwQ<\/p>\n
\u2014\u2014End\u2014\u2014<\/p>\n","protected":false},"excerpt":{"rendered":"\u7535\u963bresistance_\u7535\u963b\u5927\u5168\u521d\u89c1\u5b89~\u8fd9\u662f\u8fd1\u65e5\u8fde\u6d4b\u7684\u8003\u8bd5\u9898\u76ee\u6240\u4ee5\u6211\u4e5f\u4e0d\u77e5\u9053\u51fa\u5904QwQ\u9898\u76ee\u63cf\u8ff0\u6bcf\u6b21\u5c0fx\u7269\u7406\u4f5c\u4e1a\u6ca1\u505a\u5b8c\u65f6\uff0c\u603b\u662f\u4f1a\u53bb\u548c...","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/6468"}],"collection":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/comments?post=6468"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/6468\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=6468"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=6468"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=6468"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}