제출 #20204

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
20204		kipa00	컬러볼 (KOI15_ball)	C++98	25 / 25	140 ms	40 KiB

ball

#include <cstdio>
#include <algorithm>
using namespace std;
const int MAX = 200001;

pair<int, pair<int, int> > datas[MAX];
unsigned int sum[MAX], partial_sum[MAX], lastsum[MAX];
int lasts[MAX], lastsi[MAX];

int main() {
	int i, n, last = -1;
	scanf("%d", &n);
	for (i=0; i<n; ++i) {
		scanf("%d%d", &datas[i].second.first, &datas[i].first);
		datas[i].second.second = i;
		lasts[i] = -1;
	}
	stable_sort(datas, datas + n);
	for (i=0; i<n; ++i) {
		if (i) {
			sum[i] = sum[i - 1] + datas[i - 1].first;
			partial_sum[i] = lastsum[datas[i].second.first];
			lastsum[datas[i].second.first] = lastsum[datas[i].second.first] + datas[i].first;
		} else {
			lastsum[datas[0].second.first] = datas[0].first;
		}
	}
	for (i=0; i<n; ++i) {
		if (last == datas[i].first) {
			sum[i] = sum[i - 1];
		} else {
			last = datas[i].first;
		}
		if (lasts[datas[i].second.first] == datas[i].first) {
			partial_sum[i] = partial_sum[lastsi[datas[i].second.first]];
		} else {
			lasts[datas[i].second.first] = datas[i].first;
			lastsi[datas[i].second.first] = i;
		}
	}
	for (i=0; i<n; ++i) {
		datas[i].second.first = sum[i] - partial_sum[i];
		datas[i].first = datas[i].second.second;
	}
	stable_sort(datas, datas + n);
	for (i=0; i<n; ++i) {
		printf("%d\n", datas[i].second.first);
	}
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

ball.cpp: In function 'int main()':
ball.cpp:12:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
ball.cpp:14:57: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &datas[i].second.first, &datas[i].first);
                                                         ^

• Subtask 1: 25 / 25