{"id":57852,"date":"2025-08-15T21:00:27","date_gmt":"2025-08-15T13:00:27","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/57852.html"},"modified":"2025-08-15T21:00:27","modified_gmt":"2025-08-15T13:00:27","slug":"p2141-noip-2014-%e6%99%ae%e5%8f%8a%e7%bb%84-%e7%8f%a0%e5%bf%83%e7%ae%97%e6%b5%8b%e9%aa%8c","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/57852.html","title":{"rendered":"P2141 [NOIP 2014 \u666e\u53ca\u7ec4] \u73e0\u5fc3\u7b97\u6d4b\u9a8c"},"content":{"rendered":"

\u9898\u76ee\u80cc\u666f<\/h2>\n

NOIP2014 \u666e\u53ca T1<\/p>\n

\u9898\u76ee\u63cf\u8ff0<\/h3>\n

\u73e0\u5fc3\u7b97\u662f\u4e00\u79cd\u901a\u8fc7\u5728\u8111\u4e2d\u6a21\u62df\u7b97\u76d8\u53d8\u5316\u6765\u5b8c\u6210\u5feb\u901f\u8fd0\u7b97\u7684\u4e00\u79cd\u8ba1\u7b97\u6280\u672f\u3002\u73e0\u5fc3\u7b97\u8bad\u7ec3，\u65e2\u80fd\u591f\u5f00\u53d1\u667a\u529b，\u53c8\u80fd\u591f\u4e3a\u65e5\u5e38\u751f\u6d3b\u5e26\u6765\u5f88\u591a\u4fbf\u5229，\u56e0\u800c\u5728\u5f88\u591a\u5b66\u6821\u5f97\u5230\u666e\u53ca\u3002<\/p>\n

\u67d0\u5b66\u6821\u7684\u73e0\u5fc3\u7b97\u8001\u5e08\u91c7\u7528\u4e00\u79cd\u5feb\u901f\u8003\u5bdf\u73e0\u5fc3\u7b97\u52a0\u6cd5\u80fd\u529b\u7684\u6d4b\u9a8c\u65b9\u6cd5\u3002\u4ed6\u968f\u673a\u751f\u6210\u4e00\u4e2a\u6b63\u6574\u6570\u96c6\u5408，\u96c6\u5408\u4e2d\u7684\u6570\u5404\u4e0d\u76f8\u540c，\u7136\u540e\u8981\u6c42\u5b66\u751f\u56de\u7b54：\u5176\u4e2d\u6709\u591a\u5c11\u4e2a\u6570，\u6070\u597d\u7b49\u4e8e\u96c6\u5408\u4e2d\u53e6\u5916\u4e24\u4e2a（\u4e0d\u540c\u7684）\u6570\u4e4b\u548c？<\/p>\n

\u6700\u8fd1\u8001\u5e08\u51fa\u4e86\u4e00\u4e9b\u6d4b\u9a8c\u9898，\u8bf7\u4f60\u5e2e\u5fd9\u6c42\u51fa\u7b54\u6848\u3002<\/p>\n

\u8f93\u5165\u683c\u5f0f<\/h3>\n

\u5171\u4e24\u884c，\u7b2c\u4e00\u884c\u5305\u542b\u4e00\u4e2a\u6574\u6570\u00a0n，\u8868\u793a\u6d4b\u8bd5\u9898\u4e2d\u7ed9\u51fa\u7684\u6b63\u6574\u6570\u4e2a\u6570\u3002<\/p>\n

\u7b2c\u4e8c\u884c\u6709\u00a0n\u00a0\u4e2a\u6b63\u6574\u6570，\u6bcf\u4e24\u4e2a\u6b63\u6574\u6570\u4e4b\u95f4\u7528\u4e00\u4e2a\u7a7a\u683c\u9694\u5f00，\u8868\u793a\u6d4b\u8bd5\u9898\u4e2d\u7ed9\u51fa\u7684\u6b63\u6574\u6570\u3002<\/p>\n

\u8f93\u51fa\u683c\u5f0f<\/h3>\n

\u4e00\u4e2a\u6574\u6570，\u8868\u793a\u6d4b\u9a8c\u9898\u7b54\u6848\u3002<\/p>\n

\u8f93\u5165\u8f93\u51fa\u6837\u4f8b<\/h3>\n

\u8f93\u5165 #1<\/p>\n

4
\n1 2 3 4 <\/p>\n

\u8f93\u51fa #1<\/p>\n

2 <\/p>\n

\u8bf4\u660e\/\u63d0\u793a<\/h3>\n

\u3010\u6837\u4f8b\u8bf4\u660e\u3011<\/p>\n

\u7531\u00a01+2=3,1+3=4，\u6545\u6ee1\u8db3\u6d4b\u8bd5\u8981\u6c42\u7684\u7b54\u6848\u4e3a\u00a02\u3002<\/p>\n

\u6ce8\u610f，\u52a0\u6570\u548c\u88ab\u52a0\u6570\u5fc5\u987b\u662f\u96c6\u5408\u4e2d\u7684\u4e24\u4e2a\u4e0d\u540c\u7684\u6570\u3002<\/p>\n

\u3010\u6570\u636e\u8bf4\u660e\u3011<\/p>\n

\u5bf9\u4e8e\u00a0100%\u00a0\u7684\u6570\u636e，3\u2264n\u2264100，\u6d4b\u9a8c\u9898\u7ed9\u51fa\u7684\u6b63\u6574\u6570\u5927\u5c0f\u4e0d\u8d85\u8fc7\u00a010,000\u3002<\/p>\n

\u611f\u89c9\u8fd9\u9053\u9898\u6ca1\u5565\u597d\u8bb2\u7684，\u4e5f\u8bb2\u4e0d\u51fa\u4ec0\u4e48<\/p>\n

luogu\u9898\u76ee\u94fe\u63a5<\/p>\n

\u597d\u5927\u7684\u4e00\u6761\u6a21\u62df<\/p>\n

#include<bits\/stdc++.h>
\nusing namespace std;
\nint n,w[10090];
\nint main(){
\nint ans=0,m=0;;
\ncin>>n;
\nint q[n];
\nfor(int i=0;i<n;i++){
\ncin>>q[i];
\n}
\nsort(q,q+n);
\nfor(int i=0;i<n-1;i++){
\nfor(int j=i+1;j<n;j++){
\nfor(int k=j+1;k<n;k++){
\n if(q[i]+q[j]==q[k]){
\n w[ans]=q[k];
\n ans++;
\n break;
\n }
\n }
\n }
\n}
\n m=ans;
\nsort(w,w+ans);
\n for(int i=0;i<ans-1;i++){
\nif(w[i]==w[i+1])
\n m–;
\n }
\n cout<<m;
\nreturn 0;
\n} <\/p>\n","protected":false},"excerpt":{"rendered":"

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