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Submission #512647

# Submission time Handle Problem Language Result Execution time Memory
512647 2022-01-16T15:27:13 Z algorithm16 Quality Of Living (IOI10_quality) C++14
0 / 100
 1 ms 460 KB 
#include "quality.h"
int sum[3005][3005];
int get_sum(int x1,int y1,int x2,int y2) {
	int ret=sum[x2][y2];
	if(x1) ret-=sum[x1-1][y2];
	if(y1) ret-=sum[x2][y1-1];
	if(x1 && y1) ret+=sum[x1-1][y1-1];
	return ret;
}
int rectangle(int R, int C, int H, int W, int Q[3001][3001]) {
	int r=R,c=C,h=H,w=W;
	int lo=1,hi=r*c;
	while(lo<hi) {
		int mid=(lo+hi)/2;
		int s=0,cnt=0;
		for(int i=0;i<r;i++) {
			for(int j=0;j<c;j++) {
				if(Q[i][j]<=mid) s+=1;
				else s-=1;
				sum[i][j]=s;
				if(i) sum[i][j]+=sum[i-1][j];
			}
		}
		for(int i=0;i+h-1<r;i++) {
			for(int j=0;j+w-1<c;j++) {
				if(get_sum(i,j,i+h-1,j+w-1)>0) cnt+=1;
			}
		}
		if(cnt) hi=mid;
		else lo=mid+1;
	}
	return lo;
}

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Incorrect 1 ms 412 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Incorrect 1 ms 412 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Incorrect 1 ms 412 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Incorrect 1 ms 412 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 460 KB Output is correct
2 Incorrect 1 ms 412 KB Output isn't correct
3 Halted 0 ms 0 KB -