Submission #403468

#	Time	Username	Problem	Language	Result	Execution time	Memory
403468		tqbfjotld	조개 줍기 (KOI17_shell)	C++14	12 / 100	2097 ms	35616 KiB

shell

///subtask
#include <bits/stdc++.h>
using namespace std;
#define int long long

int vals[1505][1505];
int val2[1505][1505];
int num[1505][1505];

main(){
    int n;
    scanf("%lld",&n);
    for (int x = 0; x<n; x++){
        for (int y = 0; y<n; y++){
            scanf("%lld",&vals[x][y]);
        }
    }
    for (int x = 0; x<n; x++){
        for (int y = 0; y<n; y++){
            if (x==0){
                if (y==0) val2[x][y] = vals[x][y];
                else val2[x][y] = vals[x][y]+val2[x][y-1];
            }
            else if (y==0){
                val2[x][y] = vals[x][y]+val2[x-1][y];
            }
            else{
                val2[x][y] = vals[x][y]+max(val2[x-1][y],val2[x][y-1]);
            }
        }
    }

    int curans = 0;
    for (int x = 0; x<n; x++){
        for (int y = 0; y<n; y++){
            curans += val2[x][y];
        }
    }
    printf("%lld\n",curans);
    for (int x = 0; x<n; x++){
        char c;
        int a,b;
        scanf(" %c%lld%lld",&c,&a,&b);
        if (c=='U'){
            vals[a-1][b-1]++;
        }
        else{
            vals[a-1][b-1]--;
        }
        for (int x = 0; x<n; x++){
            for (int y = 0; y<n; y++){
                if (x==0){
                    if (y==0) val2[x][y] = vals[x][y];
                    else val2[x][y] = vals[x][y]+val2[x][y-1];
                }
                else if (y==0){
                    val2[x][y] = vals[x][y]+val2[x-1][y];
                }
                else{
                    val2[x][y] = vals[x][y]+max(val2[x-1][y],val2[x][y-1]);
                }
            }
        }

        int curans = 0;
        for (int x = 0; x<n; x++){
            for (int y = 0; y<n; y++){
                curans += val2[x][y];
            }
        }
        printf("%lld\n",curans);
    }
}

Compilation message (stderr)

shell.cpp:10:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   10 | main(){
      | ^~~~
shell.cpp: In function 'int main()':
shell.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%lld",&n);
      |     ~~~~~^~~~~~~~~~~
shell.cpp:15:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |             scanf("%lld",&vals[x][y]);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~
shell.cpp:43:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |         scanf(" %c%lld%lld",&c,&a,&b);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 0 / 34
• Subtask 3: 0 / 54