Submission #102275

#	Time	Username	Problem	Language	Result	Execution time	Memory
102275		onjo0127	Bitaro the Brave (JOI19_ho_t1)	C++11	100 / 100	809 ms	18040 KiB

joi2019_ho_t1

#include <bits/stdc++.h>
using namespace std;

char A[3009][3009];
int se[3009], ga[3009];

int main() {
    int H, W; scanf("%d%d",&H,&W);
    for(int i=1; i<=H; i++) {
        for(int j=1; j<=W; j++) {
            scanf(" %c",&A[i][j]);
        }
    }
    long long ans = 0;
    for(int i=H; i>=1; i--) {
        for(int j=W; j>=1; j--) {
            if(A[i][j] == 'J') ans += se[j] * ga[i];
            if(A[i][j] == 'I') ++se[j];
            if(A[i][j] == 'O') ++ga[i];
        }
    }
    printf("%lld",ans);
    return 0;
}

Compilation message (stderr)

joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:8:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     int H, W; scanf("%d%d",&H,&W);
               ~~~~~^~~~~~~~~~~~~~
joi2019_ho_t1.cpp:11:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf(" %c",&A[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50