执行完所有代码后，返回分段错误

Question

以下代码是我在此链接中解决cp问题的方法：http://www.usaco.org/index.php?page=viewproblem2&cpid=761

#include<bits/stdc++.h>
using namespace std;
int main(){
freopen("measurement.in","r",stdin);
freopen("measurement.out","w",stdout);  
vector<tuple<int,int,int>> records;

int n; scanf("%d", &n);

int day; char* cow; char sign; int change;
for (int i=0;i<n;i++){
scanf("%d %s %c%d", &day, cow, &sign, &change);

if (sign == '-') change = -change;
int id;

if (strcmp(cow,"Bessie") == 0) id = 0;
if (strcmp(cow,"Elsie") == 0) id = 1;
if (strcmp(cow,"Mildred") == 0) id = 2;

records.push_back(make_tuple(day,id,change)); 
}
sort(records.begin(),records.end());

int galls[3] = {7,7,7};
vector<int> board {0,1,2};  

int num = 0;
for (auto record : records){
vector<int> temp = board;
galls[get<1>(record)]+=get<2>(record);

int max_o = 0;
for(int i=0;i<3;i++)
max_o = max(max_o,galls[i]);

board.clear();
for (int i=0;i<3;i++)
if (galls[i] == max_o) board.push_back(i);  
if (board.size() != temp.size()){
num++;
} else{
for (int i=0;i<board.size();i++){
if (board[i] != temp[i]){
num++;
break;
}
}
}
}
cout << num;
}

此解决方案返回正确的值，并执行所有代码，但在运行所有代码后，会返回Segmentation fault(核心转储(。在执行完所有代码后，我从未遇到过分段错误，所以我非常困惑为什么会发生这种情况。有人能帮忙吗？

中的输入文件测量如下：

4
7 Mildred +3
4 Elsie -1
9 Mildred -1
1 Bessie +2

Answer 1

发现问题出在使用c字符串strcmp函数时。我使用了字符串compare函数，它成功了！