[问题] 输入之谜

之谜"/>

[问题] 输入之谜

洛谷p3392涂国旗
为什么我把scanf改成cin就对了呢？

#include<stdio.h>
#include<math.h>
#include<iostream>
#include<string.h>
#define infimax 2147483647
#define maxn 50
using namespace std;
int r, c;
int line12, line23;
int tot;
int mintot=infimax;
char flag[maxn + 10][maxn + 10];
void count(int wb, int br) {tot = 0;for (int i = 1; i <= wb; i++) {for (int j = 1; j <= c; j++) {if (flag[i][j] != 'W') {tot++;}}}for (int i = wb+1; i <= br-1; i++) {for (int j = 1; j <= c; j++) {if (flag[i][j] != 'B') {tot++;}}}for (int i = br; i <= r; i++) {for (int j = 1; j <= c; j++) {if (flag[i][j] != 'R') {tot++;}}}if (tot < mintot) {mintot = tot; }
}
int main() {//freopen("in.txt", "r", stdin);scanf("%d%d", &r, &c);getchar();for (int i = 1; i <= r; i++) {for (int j = 1; j <= c; j++) {cin >> flag[i][j];}getchar();}for (int i = 1; i <= r - 2; i++) {for (int j = i + 2; j <= r; j++) {count(i, j);}}printf("%d", mintot);return 0;
}
/*3 1
W
R
B
*/