Compilare: main.cpp: In function 'int main()': main.cpp:23:21: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 23 | for(int i = 1; i<=t; i++) { | ~^~~ main.cpp:30:21: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 30 | for(int x = 1; x<=N; x++) { | ~^~~ main.cpp:31:25: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 31 | for(int y = 1; y<=M; y++) { | ~^~~ main.cpp:35:31: warning: narrowing conversion of 'x' from 'int' to 'short unsigned int' [-Wnarrowing] 35 | toVisit.push({x,y}); | ^ main.cpp:35:33: warning: narrowing conversion of 'y' from 'int' to 'short unsigned int' [-Wnarrowing] 35 | toVisit.push({x,y}); | ^ main.cpp:44:21: warning: narrowing conversion of 'i' from 'int' to 'short unsigned int' [-Wnarrowing] 44 | s.push({i,j}); | ^ main.cpp:44:23: warning: narrowing conversion of 'j' from 'int' to 'short unsigned int' [-Wnarrowing] 44 | s.push({i,j}); | ^ main.cpp:51:45: warning: narrowing conversion of '(((int)s.std::queue<cv>::front().cv::ox) - 1)' from 'int' to 'short unsigned int' [-Wnarrowing] 51 | s.push({s.front().ox-1, s.front().oy}); | ~~~~~~~~~~~~^~ main.cpp:57:59: warning: narrowing conversion of '(((int)s.std::queue<cv>::front().cv::oy) - 1)' from 'int' to 'short unsigned int' [-Wnarrowing] 57 | s.push({s.front().ox, s.front().oy-1}); | ~~~~~~~~~~~~^~ main.cpp:63:45: warning: narrowing conversion of '(((int)s.std::queue<cv>::front().cv::ox) + 1)' from 'int' to 'short unsigned int' [-Wnarrowing] 63 | s.push({s.front().ox+1, s.front().oy}); | ~~~~~~~~~~~~^~ main.cpp:69:59: warning: narrowing conversion of '(((int)s.std::queue<cv>::front().cv::oy) + 1)' from 'int' to 'short unsigned int' [-Wnarrowing] 69 | s.push({s.front().ox, s.front().oy+1}); | ~~~~~~~~~~~~^~