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  • Codeforces Round #207 (Div. 1) A. Knight Tournament(STL)

    脑子又卡了。。。来一发set的,STL真心不熟。

     1 #include <stdio.h>
     2 #include <string.h>
     3 #include <iostream>
     4 #include <set>
     5 using namespace std;
     6 int flag[400001];
     7 set<int>se;
     8 set<int>::iterator it1,it,it2;
     9 int main()
    10 {
    11     int i,x,y,num,n,m;
    12     scanf("%d%d",&n,&m);
    13     for(i = 1; i <= n; i ++)
    14         se.insert(i);
    15     for(i = 1; i <= m; i ++)
    16     {
    17         scanf("%d%d%d",&x,&y,&num);
    18         it1 = se.lower_bound(x);
    19         for(it = it1; it != se.end()&&(*it) <= y;)
    20         {
    21             if(*it == num)
    22             {
    23                 it ++;
    24                 continue;
    25             }
    26             flag[*it] = num;
    27             it2 = it;
    28             it2 ++;
    29             se.erase(it);
    30             it = it2;
    31         }
    32     }
    33     for(i = 1; i <= n; i ++)
    34     {
    35         if(i == 1)
    36             printf("%d",flag[i]);
    37         else
    38             printf(" %d",flag[i]);
    39     }
    40     printf("
    ");
    41     return 0;
    42 }
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  • 原文地址:https://www.cnblogs.com/naix-x/p/3371772.html
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