{"id":41086,"date":"2025-05-31T06:02:24","date_gmt":"2025-05-30T22:02:24","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/41086.html"},"modified":"2025-05-31T06:02:24","modified_gmt":"2025-05-30T22:02:24","slug":"p1068-noip-2009-%e6%99%ae%e5%8f%8a%e7%bb%84-%e5%88%86%e6%95%b0%e7%ba%bf%e5%88%92%e5%ae%9a","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/41086.html","title":{"rendered":"P1068 [NOIP 2009 \u666e\u53ca\u7ec4] \u5206\u6570\u7ebf\u5212\u5b9a"},"content":{"rendered":"

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

\u4e16\u535a\u4f1a\u5fd7\u613f\u8005\u7684\u9009\u62d4\u5de5\u4f5c\u6b63\u5728 A \u5e02\u5982\u706b\u5982\u837c\u7684\u8fdb\u884c\u3002\u4e3a\u4e86\u9009\u62d4\u6700\u5408\u9002\u7684\u4eba\u624d，A \u5e02\u5bf9\u6240\u6709\u62a5\u540d\u7684\u9009\u624b\u8fdb\u884c\u4e86\u7b14\u8bd5，\u7b14\u8bd5\u5206\u6570\u8fbe\u5230\u9762\u8bd5\u5206\u6570\u7ebf\u7684\u9009\u624b\u65b9\u53ef\u8fdb\u5165\u9762\u8bd5\u3002\u9762\u8bd5\u5206\u6570\u7ebf\u6839\u636e\u8ba1\u5212\u5f55\u53d6\u4eba\u6570\u7684\u00a0150%\u00a0\u5212\u5b9a，\u5373\u5982\u679c\u8ba1\u5212\u5f55\u53d6\u00a0m\u00a0\u540d\u5fd7\u613f\u8005，\u5219\u9762\u8bd5\u5206\u6570\u7ebf\u4e3a\u6392\u540d\u7b2c\u00a0m\u00d7150%（\u5411\u4e0b\u53d6\u6574）\u540d\u7684\u9009\u624b\u7684\u5206\u6570，\u800c\u6700\u7ec8\u8fdb\u5165\u9762\u8bd5\u7684\u9009\u624b\u4e3a\u7b14\u8bd5\u6210\u7ee9\u4e0d\u4f4e\u4e8e\u9762\u8bd5\u5206\u6570\u7ebf\u7684\u6240\u6709\u9009\u624b\u3002<\/p>\n

\u73b0\u5728\u5c31\u8bf7\u4f60\u7f16\u5199\u7a0b\u5e8f\u5212\u5b9a\u9762\u8bd5\u5206\u6570\u7ebf，\u5e76\u8f93\u51fa\u6240\u6709\u8fdb\u5165\u9762\u8bd5\u7684\u9009\u624b\u7684\u62a5\u540d\u53f7\u548c\u7b14\u8bd5\u6210\u7ee9\u3002<\/p>\n

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

\u7b2c\u4e00\u884c，\u4e24\u4e2a\u6574\u6570\u00a0n,m(5\u2264n\u22645000,3\u2264m\u2264n)，\u4e2d\u95f4\u7528\u4e00\u4e2a\u7a7a\u683c\u9694\u5f00，\u5176\u4e2d\u00a0n\u00a0\u8868\u793a\u62a5\u540d\u53c2\u52a0\u7b14\u8bd5\u7684\u9009\u624b\u603b\u6570，m\u00a0\u8868\u793a\u8ba1\u5212\u5f55\u53d6\u7684\u5fd7\u613f\u8005\u4eba\u6570\u3002\u8f93\u5165\u6570\u636e\u4fdd\u8bc1\u00a0m\u00d7150%\u00a0\u5411\u4e0b\u53d6\u6574\u540e\u5c0f\u4e8e\u7b49\u4e8e\u00a0n\u3002<\/p>\n

\u7b2c\u4e8c\u884c\u5230\u7b2c\u00a0n+1\u00a0\u884c，\u6bcf\u884c\u5305\u62ec\u4e24\u4e2a\u6574\u6570，\u4e2d\u95f4\u7528\u4e00\u4e2a\u7a7a\u683c\u9694\u5f00，\u5206\u522b\u662f\u9009\u624b\u7684\u62a5\u540d\u53f7\u00a0k(1000\u2264k\u22649999)\u548c\u8be5\u9009\u624b\u7684\u7b14\u8bd5\u6210\u7ee9\u00a0s(1\u2264s\u2264100)\u3002\u6570\u636e\u4fdd\u8bc1\u9009\u624b\u7684\u62a5\u540d\u53f7\u5404\u4e0d\u76f8\u540c\u3002<\/p>\n

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

\u7b2c\u4e00\u884c，\u6709\u00a02\u00a0\u4e2a\u6574\u6570，\u7528\u4e00\u4e2a\u7a7a\u683c\u9694\u5f00，\u7b2c\u4e00\u4e2a\u6574\u6570\u8868\u793a\u9762\u8bd5\u5206\u6570\u7ebf；\u7b2c\u4e8c\u4e2a\u6574\u6570\u4e3a\u8fdb\u5165\u9762\u8bd5\u7684\u9009\u624b\u7684\u5b9e\u9645\u4eba\u6570\u3002<\/p>\n

\u4ece\u7b2c\u4e8c\u884c\u5f00\u59cb，\u6bcf\u884c\u5305\u542b\u00a02\u00a0\u4e2a\u6574\u6570，\u4e2d\u95f4\u7528\u4e00\u4e2a\u7a7a\u683c\u9694\u5f00，\u5206\u522b\u8868\u793a\u8fdb\u5165\u9762\u8bd5\u7684\u9009\u624b\u7684\u62a5\u540d\u53f7\u548c\u7b14\u8bd5\u6210\u7ee9，\u6309\u7167\u7b14\u8bd5\u6210\u7ee9\u4ece\u9ad8\u5230\u4f4e\u8f93\u51fa，\u5982\u679c\u6210\u7ee9\u76f8\u540c，\u5219\u6309\u62a5\u540d\u53f7\u7531\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u8f93\u51fa\u3002<\/p>\n

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

\u8f93\u5165\u00a0<\/p>\n

6 3
\n1000 90
\n3239 88
\n2390 95
\n7231 84
\n1005 95
\n1001 88 <\/p>\n

\u8f93\u51fa\u00a0<\/p>\n

88 5
\n1005 95
\n2390 95
\n1000 90
\n1001 88
\n3239 88 <\/p>\n

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

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

m\u00d7150%=3\u00d7150%=4.5，\u5411\u4e0b\u53d6\u6574\u540e\u4e3a\u00a04\u3002\u4fdd\u8bc1\u00a04\u00a0\u4e2a\u4eba\u8fdb\u5165\u9762\u8bd5\u7684\u5206\u6570\u7ebf\u4e3a\u00a088，\u4f46\u56e0\u4e3a\u00a088\u00a0\u6709\u91cd\u5206，\u6240\u4ee5\u6240\u6709\u6210\u7ee9\u5927\u4e8e\u7b49\u4e8e\u00a088\u00a0\u7684\u9009\u624b\u90fd\u53ef\u4ee5\u8fdb\u5165\u9762\u8bd5，\u6545\u6700\u7ec8\u6709\u00a05\u00a0\u4e2a\u4eba\u8fdb\u5165\u9762\u8bd5\u3002<\/p>\n

\u4ee3\u7801<\/h3>\n

\u65e0\u6ce8\u91ca\u7248<\/h4>\n

#include<bits\/stdc++.h>
\nusing namespace std;
\nstruct xs{
\nint h;
\nint s;
\n}a[5010];
\nbool cmp(xs p, xs q){
\nif(p.s==q.s) return p.h<q.h;
\nelse return p.s>q.s;
\n}
\nint main(){
\nint n,m;
\ncin>>n>>m;
\nfor(int i=1;i<=n;i++){
\ncin>>a[i].h>>a[i].s;
\n}
\ndouble g=m*1.5;
\nint f=floor(g);
\nsort(a+1,a+n+1,cmp);
\nint sum=0,k=a[f].s;
\nfor(int i=f+1;i<=n;i++){
\nif(a[i].s==a[f].s){
\nsum++;
\n}
\n}
\ncout<<k<<" "<<f+sum<<"\\\\n";
\nfor(int i=1;i<=f+sum;i++){
\ncout<<a[i].h<<" "<<a[i].s<<"\\\\n";
\n}
\n} <\/p>\n

\u6709\u6ce8\u91ca\u7248\u00a0<\/h4>\n

#include<bits\/stdc++.h> \/\/ \u5305\u542b\u6807\u51c6\u5e93\u7684\u6240\u6709\u5934\u6587\u4ef6
\nusing namespace std; \/\/ \u4f7f\u7528\u6807\u51c6\u547d\u540d\u7a7a\u95f4<\/p>\n

\/\/ \u5b9a\u4e49\u4e00\u4e2a\u7ed3\u6784\u4f53xs，\u8868\u793a\u9009\u624b\u7684\u4fe1\u606f
\nstruct xs{
\n int h; \/\/ \u62a5\u540d\u53f7
\n int s; \/\/ \u7b14\u8bd5\u6210\u7ee9
\n}a[5010]; \/\/ \u5b9a\u4e49\u4e00\u4e2a\u7ed3\u6784\u4f53\u6570\u7ec4a，\u6700\u591a\u5b58\u50a85010\u4e2a\u9009\u624b\u7684\u4fe1\u606f<\/p>\n

\/\/ \u81ea\u5b9a\u4e49\u6bd4\u8f83\u51fd\u6570cmp，\u7528\u4e8e\u6392\u5e8f
\nbool cmp(xs p, xs q){
\n if(p.s==q.s) return p.h<q.h; \/\/ \u5982\u679c\u6210\u7ee9\u76f8\u540c，\u6309\u62a5\u540d\u53f7\u5347\u5e8f\u6392\u5217
\n else return p.s>q.s; \/\/ \u5426\u5219\u6309\u6210\u7ee9\u964d\u5e8f\u6392\u5217
\n}<\/p>\n

int main(){
\n int n,m; \/\/ n:\u62a5\u540d\u9009\u624b\u603b\u6570，m:\u8ba1\u5212\u5f55\u53d6\u4eba\u6570
\n cin>>n>>m; \/\/ \u8f93\u5165n\u548cm<\/p>\n

\/\/ \u5faa\u73af\u8f93\u5165\u6bcf\u4e2a\u9009\u624b\u7684\u62a5\u540d\u53f7\u548c\u6210\u7ee9
\n for(int i=1;i<=n;i++){
\n cin>>a[i].h>>a[i].s;
\n }<\/p>\n

double g=m*1.5; \/\/ \u8ba1\u7b97\u9762\u8bd5\u4eba\u6570\u7684150%\u6bd4\u4f8b
\n int f=floor(g); \/\/ \u5411\u4e0b\u53d6\u6574\u5f97\u5230\u9762\u8bd5\u4eba\u6570f<\/p>\n

sort(a+1,a+n+1,cmp); \/\/ \u5bf9\u9009\u624b\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f，\u6309\u7167\u81ea\u5b9a\u4e49\u89c4\u5219cmp<\/p>\n

int sum=0,k=a[f].s; \/\/ sum\u7528\u4e8e\u7edf\u8ba1\u4e0e\u5206\u6570\u7ebf\u76f8\u540c\u7684\u989d\u5916\u4eba\u6570，k\u5b58\u50a8\u5206\u6570\u7ebf<\/p>\n

\/\/ \u68c0\u67e5\u5206\u6570\u7ebf\u4e4b\u540e\u662f\u5426\u6709\u76f8\u540c\u6210\u7ee9\u7684\u9009\u624b
\n for(int i=f+1;i<=n;i++){
\n if(a[i].s==a[f].s){
\n sum++; \/\/ \u5982\u679c\u6709，\u5219\u589e\u52a0sum
\n }
\n }<\/p>\n

\/\/ \u8f93\u51fa\u5206\u6570\u7ebf\u548c\u5b9e\u9645\u8fdb\u5165\u9762\u8bd5\u7684\u4eba\u6570
\n cout<<k<<" "<<f+sum<<"\\\\n";<\/p>\n

\/\/ \u8f93\u51fa\u6240\u6709\u8fdb\u5165\u9762\u8bd5\u7684\u9009\u624b\u4fe1\u606f
\n for(int i=1;i<=f+sum;i++){
\n cout<<a[i].h<<" "<<a[i].s<<"\\\\n";
\n }<\/p>\n

return 0; \/\/ \u7a0b\u5e8f\u6b63\u5e38\u7ed3\u675f
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"

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